If im correct dont they measure those at full power under a 2 ohm load ? But they say there amps wont be stable there ? HMMM Yes I have ahd quit a few of them 800.2 Not bad A500.2 power nice buzzing noise in that one and you couldnt get to the gain knob it wasnt placed in the right spot (this was new) , There not bad for sub amps but for a mids and high amp they **** and sound horrible if you ask me ! I think there are a lot better amps for what they a charging for them now ! And no Im not terrible immpresed with the jbl sq either but it does have a lot of power ! Maybe someday Ill find the perfect set-up !! still trying ! So far out of what i have tried I think my ppi 2150 is my favorite for mids and highs , and my orion xtr 275 is very god for mids and highs , Havnt really found a bass amp i like to much yet ! But like they say 10% product and 90% install , And im still woriking on installing everything right !